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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.8, 2006³â, pp.119-127
µÞä¿òÀç·Î ÀÌ¿ëÇÑ °í·Î ¼ö¼â½½·¡±×ÀÇ Åä¾ÐƯ¼º¿¡ °üÇÑ ½ÇÇèÀû ¿¬±¸
( A Study on Earth Pressure Properties of Granulated Blast Furnace Slag Used as Back-fill Material )
¹é¿øÁø;À̰­ÀÏ; ÀϺ» ¾ß¸¶±¸Ä¡´ëÇÐ °øÇкΠ»çȸ°Ç¼³°øÇаú;´ëÁø´ëÇб³ °ø°ú´ëÇÐ °Ç¼³½Ã½ºÅÛ°øÇаú;
 
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°í·Î ¼ö¼â½½·¡±×´Â ¼±Ã¶ÀÇ Á¦Ã¶°úÁ¤¿¡¼­ »ý»êµÇ´Â ºÎ»ê¹°·Î¼­ ÀÚ¿¬ ÇØ¼º¸ð·¡¿Í À¯»çÇÑ ÀÔÀÚÇü»óÀ» °¡Áö°í °æ·®À̸ç Å« Àü´Ü°­µµ¿Í Åõ¼ö¼ºÀ» ³ªÅ¸³½´Ù. ƯÈ÷, °í·Î ¼ö¼â½½·¡±×´Â ½Ã°£°æ°ú¿Í ´õºÒ¾î °æÈ­ÇÏ´Â ÀáÀç¼ö°æ¼ºÀ» °¡Áø´Ù. µû¶ó¼­ °í·Î ¼ö¼â½½·¡±×°¡ ¾Èº®À̳ª ¿Ëº®ÀÇ µÞä¿ò Àç·á·Î »ç¿ë µÇ¾îÁ³À» ¶§, °æÈ­¿¡ ÀÇÇÑ Àü´Ü°­µµÀÇ Áõ°¡·Î Åä¾Ð°¨¼Ò°¡ ±â´ëµÇ¸ç, °á°úÀûÀ¸·Î Ç׸¸±¸Á¶¹°ÀÇ °Ç¼³ºñ¿ëÀÌ °¨¼ÒÇÏ°Ô µÈ´Ù. º» ¿¬±¸¿¡¼­´Â ¸ðÇüÅäÁ¶¸¦ ÀÌ¿ëÇÏ¿© °í·Î ¼ö¼â½½·¡±×¿Í Toyoura sand¿¡ ´ëÇØ Åä¾Ð, º® ¸¶Âû·Â, °¡µ¿º®Ã¼ Ç¥¸é¿¡¼­ÀÇ Åä¾ÐºÐÆ÷¸¦ ÃøÁ¤ÇÏ´Â ¸ðÇü½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ½ÇÇè¿¡¼­ »ó´ë¹Ðµµ´Â 25%, 55% ¹× 70%·Î ¼³Á¤ÇÏ¿´À¸¸ç º®Ã¼´Â ÀúÁ¡À» Áß½ÉÀ¸·Î ÁÖµ¿ ¹× ¼öµ¿Åä¾ÐÃøÀ¸·Î ȸÀü½ÃÄ×´Ù. º®Ã¼ »óºÎ¿¡¼­ÀÇ ÃÖ´ë ¼öÆòº¯À§´Â ${pm}2mm$·Î ¼³Á¤ÇÏ¿´´Ù. ¸ðÇü½ÇÇè °á°ú, °í·Î ¼ö¼â½½·¡±×¿¡¼­ ¾ò¾îÁø ÁÖµ¿Åä¾ÐÀÌ Toyoura sandº¸´Ù ÀÛÀ½À» ¾Ë¾Ò´Ù.
Granulated Blast Furnace Slag (GBFS) is produced in the manufacture process of pig-iron and shows a similar particle formation to that of natural sea sand and also shows light weight, high shear strength, well permeability, and especially has a latent hydraulic property by which GBFS is solidified with time. Therefore, when GBFS is used as a backfill material of quay or retaining walls, the increase of shear strength induced by the hardening is presumed to reduce the earth pressure and consequently the construction cost of harbor structures decreases. In this study, using the model sand box (50 cm$ imes$50 cm$ imes$100 cm), the model wall tests were carried out on GBFS and Toyoura standard sand, in which the resultant earth pressure, a wall friction and the earth pressure distribution at the movable wall surface were measured. In the tests, the relative density was set as Dr=25, 55 and 70% and the wall was rotated at the bottom to the active earth pressure side and followed by the passive side. The maximum horizontal displacement at the top of the wall was set as ${pm}2mm$. By these model test results, it is clarified that the resultant earth pressure obtained by using GBFS is smaller than that of Toyoura sand, especially in the active-earth pressure.
 
Ű¿öµå
Earth pressure;Granulated blast furnace slag;Latent hydraulic property;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.8, 2006³â, pp.119-127
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200634741580912)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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